diff --git a/inc/graph.h b/inc/graph.h
index 24fa82b..48576f6 100644
--- a/inc/graph.h
+++ b/inc/graph.h
@@ -268,8 +268,8 @@ public:
    const IntArray &getNodesInBucket (const Vector &pos);
 
 public:
-   size_t getMaxRouteLength () const {
-      return m_paths.length () / 2;
+  int32_t getMaxRouteLength () const {
+     return length () / 2;
    }
 
    StringRef getAuthor () const {
diff --git a/inc/yapb.h b/inc/yapb.h
index 6a4ad33..1cb06eb 100644
--- a/inc/yapb.h
+++ b/inc/yapb.h
@@ -188,7 +188,7 @@ public:
       m_path[0] = 0;
    }
 
-   void init (size_t length) {
+   void init (int32_t length) {
       m_path = cr::makeUnique <int32_t[]> (length);
    }
 };